P4_1 The 'Fatman'

Matt Jupp, Kieran Yeomans, Dillon Cobley, Domonic Fenlon-Smith


In this paper we investigated the feasibility of the M42 `Fat Man' by considering the recoil felt on a person when firing the $5.5$ kg projectile. It was found that a muzzle velocity of $v = 32.1$ms$^{-1}$ is required to fire the projectile $105$ m when air resistance was taken into account. To achieve this muzzle velocity a pressure of $P = 16.1$x$10^6$ Pa is required in the pneumatic firing system. It was found that the recoil of the system is $p = 188.1$ kgms$^{-1}$. The M42 `Fat Man' was determined to be a feasible weapon system.

Full Text:



  • There are currently no refbacks.
We use both functional and performance cookies to improve visitor experience. Continue browsing if you are happy to accept cookies. Please see our Privacy Policy for more information.